Solid-Lubrication with Continous Replenishment by Catalytically Generated Carbon and Related Means

用于烃裂化和脱氢的催化表面具有 在石油工业中已知在使用一些之后变得不活跃 因为有碳或“焦炭”涂层。 拟议的研究是 涉及使用这种涂层，优选在 模拟操作机械环境的条件， “绝热”柴油机，作为自我补充固体润滑剂。 碳涂层的持续磨损将保持催化活性 的基板。 工作温度在 活塞环/气缸面积的最佳选择 过渡金属催化生焦温度 恰好在500-600摄氏度的范围内。 燃烧吸附 这些碳上的室气体将进一步减少摩擦和磨损。 在合金中或在陶瓷中或陶瓷上的相同过渡金属也是可接受的。 接近碳氢化合物。 建议的研究计划将使用 销盘式测试仪上的可重复制备的样品，并确定 摩擦和磨损率，碳形成率和碳的速率 氧化，以帮助指导设计和材料选择高 发动机环境中的温度润滑。

Catalytic surfaces for hydrocarbon cracking and dehydrogenation have been known in the petroleum industry to become inactive after some use because of carbon or "coke" coating. The proposed research is directed toward using such coatings, preferably produced under conditions simulating the environment of such operating machinery as the "adiabatic" diesel engine, as self-replenishing solid lubricants. Continued wear of the carbon coatings would maintain catalytic activity of the substrate. The operating temperatures in the piston-ring/cylinder area of such a diesel engine and the preferred temperature of catalytic coke generation by some transition metals happen to coincide in the 500-600 C range. Adsorption of combustion chamber gases on these carbons would further reduce friction and wear. The same transition metals, in alloys or in or on ceramics are also close to hydrocarbons. The suggested research program will use pin-on-disk testers on reproducibly prepared samples and determine the friction and wear rates, rates of carbon formation and rates of carbon oxidation to help guide the design and materials selection for high temperature lubrication in an engine environment.